Diamaint saothraithe Igi saotharlainne hpht deimhnithe VS VVS Soiléire
Paraiméadair diamaint saothraithe hpht saotharlainne
| Cód # | Grád | Carat Meáchan | Soiléire | Méid |
| 04A | A | 0.2-0.4ct | VVS vs | 3.0-4.0mm |
| 06A | A | 0.4-0.6ct | VVS vs | 4.0-4.5mm |
| 08A | A | 0.6-0.8ct | VVS- SI1 | 4.0-5.0mm |
| 08B | B | 0.6-0.8ct | SI1- SI2 | 4.0-5.0mm |
| 08C | C | 0.6-0.8ct | SI2-I1 | 4.0-5.0mm |
| 08D | D | 0.6-0.8ct | I1-I3 | 4.0-5.0mm |
| 10A | A | 0.8-1.0ct | VVS- SI1 | 4.5-5.5mm |
| 10B | B | 0.8-1.0ct | SI1- SI2 | 4.5-5.5mm |
| 10C | C | 0.8-1.0ct | SI2-I1 | 4.5-5.5mm |
| 10d | D | 0.8-1.0ct | I1-I3 | 4.5-5.5mm |
| 15A | A | 1.0-1.5ct | VVS- SI1 | 5.0-6.0mm |
| 15B | B | 1.0-1.5ct | SI1- SI2 | 5.0-6.0mm |
| 15C | C | 1.0-1.5ct | SI2-I1 | 5.0-6.0mm |
| 15D | D | 1.0-1.5ct | I1-I3 | 5.0-6.0mm |
| 20A | A | 1.5-2.0ct | VVS- SI1 | 5.5-6.5mm |
| 20B | B | 1.5-2.0ct | SI1- SI2 | 5.5-6.5mm |
| 20C | C | 1.5-2.0ct | SI2-I1 | 5.5-6.5mm |
| 20d | D | 1.5-2.0ct | I1-I3 | 5.5-6.5mm |
| 25A | A | 2.0-2.5ct | VVS- SI1 | 6.5-7.5mm |
| 25B | B | 2.0-2.5ct | SI1- SI2 | 6.5-7.5mm |
| 25C | C | 2.0-2.5ct | SI2-I1 | 6.5-7.5mm |
| 25D | D | 2.0-2.5ct | I1-I3 | 6.5-7.5mm |
| 30A | A | 2.5-3.0ct | VVS- SI1 | 7.0-8.0mm |
| 30B | B | 2.5-3.0ct | SI1- SI2 | 7.0-8.0mm |
| 30C | C | 2.5-3.0ct | SI2-I1 | 7.0-8.0mm |
| 30d | D | 2.5-3.0ct | I1-I3 | 7.0-8.0mm |
| 35A | A | 3.0-3.5ct | VVS- SI1 | 7.0-8.5mm |
| 35B | B | 3.0-3.5ct | SI1- SI2 | 7.0-8.5mm |
| 35C | C | 3.0-3.5ct | SI2-I1 | 7.0-8.5mm |
| 35D | D | 3.0-3.5ct | I1-I3 | 7.0-8.5mm |
| 40A | A | 3.5-4.0ct | VVS- SI1 | 8.5-9.0mm |
| 40B | B | 3.5-4.0ct | SI1- SI2 | 8.5-9.0mm |
| 40C | C | 3.5-4.0ct | SI2-I1 | 8.5-9.0mm |
| 40d | D | 3.5-4.0ct | I1-I3 | 8.5-9.0mm |
| 50A | A | 4.0-5.0ct | VVS- SI1 | 7.5-9.5mm |
| 50B | B | 4.0-5.0ct | SI1- SI2 | 7.5-9.5mm |
| 60A | A | 5.0-6.0ct | VVS- SI1 | 8.5-10mm |
| 60B | B | 5.0-6.0ct | SI1- SI2 | 8.5-10mm |
| 70A | A | 6.0-7.0ct | VVS- SI1 | 9.0-10.5mm |
| 70B | B | 6.0-7.0ct | SI1- SI2 | 9.0-10.5mm |
| 80A | A | 7.0-8.0ct | VVS- SI1 | 9.0-11mm |
| 80B | B | 7.0-8.0ct | SI1- SI2 | 9.0-11mm |
| 80+A | A | 8.0ct+ | VVS- SI1 | 9mm+ |
| 80+B | B | 8.0ct+ | SI1- SI2 | 9mm+ |
4C Caighdeán diamaint saothraithe hpht saotharlainne
Dath
Déantar dath diamaint cóireáilte hpht a ghrádú i dtimpeallacht chaighdeánaithe féachana. Déanann Geimeolaithe anailís ar dhath sa raon dath D go Z agus cuirtear an diamant bun os cionn, amharc tríd an taobh, chun radharc neodrach a éascú.
Soiléire
Gráid soiléireacht diamaint cóireáilte hpht de réir caighdeáin a nglactar leo go hidirnáisiúnta ag formhéadú 10X, de réir infheictheacht, méid, líon, suíomh agus nádúr na saintréithe inmheánacha agus dromchla ag an méadú sin.
Gearr
Déantar comhréireanna foriomlána, tomhais agus uillinneacha gné na gemologists a chur i gcomparáid le staidéir ar ghile, tine, scintillation agus patrún chun Grád Gearrtha an diamaint chóireáilte hpht a chinneadh.
Carat meáchan
Is í an chéad chéim i ngrádú diamaint cóireáilte hpht ná an diamant a mheá.Is é meáchan carat an t-aonad meáchain caighdeánach do chlocha geama.Tá grádú diamant go dtí dhá ionad dheachúlacha chun cruinneas a chinntiú.
